public class P11 {
	public static void main(String[] args) {
		StringBuffer buffer = new StringBuffer();
		buffer.append("08 02 22 97 38 15 00 40 00 75 04 05 07 78 52 12 50 77 91 08\n");
		buffer.append("49 49 99 40 17 81 18 57 60 87 17 40 98 43 69 48 04 56 62 00\n");
		buffer.append("81 49 31 73 55 79 14 29 93 71 40 67 53 88 30 03 49 13 36 65\n");
		buffer.append("52 70 95 23 04 60 11 42 69 24 68 56 01 32 56 71 37 02 36 91\n");
		buffer.append("22 31 16 71 51 67 63 89 41 92 36 54 22 40 40 28 66 33 13 80\n");
		buffer.append("24 47 32 60 99 03 45 02 44 75 33 53 78 36 84 20 35 17 12 50\n");
		buffer.append("32 98 81 28 64 23 67 10 26 38 40 67 59 54 70 66 18 38 64 70\n");
		buffer.append("67 26 20 68 02 62 12 20 95 63 94 39 63 08 40 91 66 49 94 21\n");
		buffer.append("24 55 58 05 66 73 99 26 97 17 78 78 96 83 14 88 34 89 63 72\n");
		buffer.append("21 36 23 09 75 00 76 44 20 45 35 14 00 61 33 97 34 31 33 95\n");
		buffer.append("78 17 53 28 22 75 31 67 15 94 03 80 04 62 16 14 09 53 56 92\n");
		buffer.append("16 39 05 42 96 35 31 47 55 58 88 24 00 17 54 24 36 29 85 57\n");
		buffer.append("86 56 00 48 35 71 89 07 05 44 44 37 44 60 21 58 51 54 17 58\n");
		buffer.append("19 80 81 68 05 94 47 69 28 73 92 13 86 52 17 77 04 89 55 40\n");
		buffer.append("04 52 08 83 97 35 99 16 07 97 57 32 16 26 26 79 33 27 98 66\n");
		buffer.append("88 36 68 87 57 62 20 72 03 46 33 67 46 55 12 32 63 93 53 69\n");
		buffer.append("04 42 16 73 38 25 39 11 24 94 72 18 08 46 29 32 40 62 76 36\n");
		buffer.append("20 69 36 41 72 30 23 88 34 62 99 69 82 67 59 85 74 04 36 16\n");
		buffer.append("20 73 35 29 78 31 90 01 74 31 49 71 48 86 81 16 23 57 05 54\n");
		buffer.append("01 70 54 71 83 51 54 69 16 92 33 48 61 43 52 01 89 19 67 48\n");
		
		int[][] a = new int[20][20];
		
		String[] line = buffer.toString().split("\\n");
		for (int i = 0; i < 20; i++) {
			for (int j = 0; j < 20; j++) {
				a[i][j] = Integer.parseInt(line[i].split(" ")[j], 10);
			}
		}
		
//		for (int i = 0; i < 20; i++) {
//			for (int j = 0; j < 20; j++) {
//				System.out.print(a[i][j] + ",");
//			}
//			System.out.println();
//		}
//		
		int max = 0;
		int[][] m = new int[][] {
				{0, 1}
				,{1, 0}
				,{1, 1}
		};
		
		for (int row = 0; row < 20; row++) {
			for (int column = 0; column < 20; column++) {
				for (int k = 0; k < 3; k++) {					
					int p = 1;
					for (int index = 0; index < 4; index++) {
						try {
							p *= a[row + index * m[k][0]][column + index * m[k][1]];
							//System.out.println(p);
							if (max < p) {
								max = p;
							}
						} catch (Exception e) {
						}
					}
				}
			}			
		}
		
		System.out.println(max);
		
	}
}
